Paper clip pen



FIG. 1 is a front perspective view and the paper clips shown in broken lines inside the barrel of the pen are not a part of the design thereof;

FIG. 2 is a right side perspective view thereof;

FIG. 3 is a left side perspective view thereof;

FIG. 4 is a back perspective view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a paper clip pen, as shown and described. 